firewire: ohci: remove obsolete debug logging for selfID sequence

A commit 677ceae1 ("firewire: core: add tracepoints event for
self_id_sequence") added the "firewire:self_id_sequence" event in v6.11.
A commit 526e21a2 ("firewire: ohci: add tracepoints event for data
of Self-ID DMA") added the "firewire_ohci:self_id_complete" event in
v6.12.

These tracepoints replace the equivalent debug logging. This commit
removes the logging.

Link: https://lore.kernel.org/r/20250821003017.186752-3-o-takashi@sakamocchi.jp


Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>